NATURAL TRIPLOIDY IN ASTYANAX-SCABRIPINNIS (PISCES, CHARACIDAE) AND SIMULTANEOUS OCCURRENCE OF MACRO B-CHROMOSOMES


Autoria(s): Maistro, E. L.; Dias, A. L.; Foresti, F.; Oliveira, C.; Moreira, O.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/07/1994

Resumo

The occurrence of natural triploidy in two specimens of Astyanax scabripinnis collected in the Araqua river and in the Corrego das Pedras stream, respectively, is noticed. The triploid specimen from the Araqua river presented one macro B-chromosome and the triploid specimen from Corrego das Pedras stream presented two macro B-chromosomes. The C-banding performed in the specimen from the Araqua river confirmed the triploidy and showed that the macro B-chromosome was entirely heterochromatic. Ag-NOR characterization showed two chromosomes involved in the nucleolar activity in both specimens. Some aspects related to the origin of triploid fishes are described.

Formato

233-239

Identificador

http://www.caryologia.unifi.it/

Caryologia. Florence: Univ Florence Botany Inst, v. 47, n. 3-4, p. 233-239, 1994.

0008-7114

http://hdl.handle.net/11449/32201

WOS:A1994QX43200005

Idioma(s)

eng

Publicador

Univ Florence Botany Inst

Relação

Caryologia

Direitos

closedAccess

Palavras-Chave #FISH CYTOGENETICS #ASTYANAX-SCABRIPINNIS #NATURAL TRIPLOIDY #B-CHROMOSOMES #C-BANDING
Tipo

info:eu-repo/semantics/article